/*
 * Copyright (C) 2011 Daniel Thomas (drt24)
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
 * in compliance with the License. You may obtain a copy of the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software distributed under the License
 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 */
package com.google.nigori.client;

import com.google.nigori.common.DSASign;
import com.google.nigori.common.NigoriCryptographyException;

/**
 * @author drt24
 * 
 */
interface KeyManager {
  byte[] getUsername();

  byte[] getPassword();

  byte[] decrypt(byte[] ciphertext) throws NigoriCryptographyException;

  byte[] decrypt(byte[] encryptionKey, byte[] ciphertext) throws NigoriCryptographyException;

  byte[] encrypt(byte[] plaintext) throws NigoriCryptographyException;

  byte[] encrypt(byte[] key, byte[] plaintext) throws NigoriCryptographyException;

  byte[] encryptDeterministically(byte[] plaintext) throws NigoriCryptographyException;

  byte[] encryptDeterministically(byte[] key, byte[] plaintext) throws NigoriCryptographyException;

  DSASign signer() throws NigoriCryptographyException;

  String getServerName();
}
